{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["subsidiaries", "city of headquarters", "state or province of headquarters", "countries of residence"], "input": "When  Abram Lyle  Sons merged with Henry Tate Sons in 1921 to form  Tate Lyle  he became a director of the new company then its chairman in 1928 and president in 1937 ."}
{"subsidiaries": [], "city of headquarters": [], "state or province of headquarters": [], "countries of residence": []}